Advanced characterization of a coffee fermenting tank by multi-distributed wireless sensors: spatial interpolation and phase diagrams.

Correa Hernando, Eva Cristina and Jiménez Ariza, Heidi Tatiana and Diaz Barcos, Virginia and Barreiro Elorza, Pilar and Diezma Iglesias, Belen and Oteros, R. and Echeverri, César and Ruiz-Altisent, Margarita (2013). Advanced characterization of a coffee fermenting tank by multi-distributed wireless sensors: spatial interpolation and phase diagrams.. In: "8th CIGR Section VI International Symposium on "Advanced Food Processing and Quality Management"", 3/11/2013-7/11/2013, Guangzhou, China.

Description

Title: Advanced characterization of a coffee fermenting tank by multi-distributed wireless sensors: spatial interpolation and phase diagrams.
Author/s:
  • Correa Hernando, Eva Cristina
  • Jiménez Ariza, Heidi Tatiana
  • Diaz Barcos, Virginia
  • Barreiro Elorza, Pilar
  • Diezma Iglesias, Belen
  • Oteros, R.
  • Echeverri, César
  • Ruiz-Altisent, Margarita
Item Type: Presentation at Congress or Conference (Article)
Event Title: 8th CIGR Section VI International Symposium on "Advanced Food Processing and Quality Management"
Event Dates: 3/11/2013-7/11/2013
Event Location: Guangzhou, China
Title of Book: 8th CIGR Section VI International Symposium on "Advanced Food Processing and Quality Management"
Date: 2013
Subjects:
Faculty: E.T.S.I. Agrónomos (UPM) [antigua denominación]
Department: Ingeniería Rural [hasta 2014]
UPM's Research Group: Técnicas Avanzadas en Agroalimentación LPF-TAGRALIA
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

In coffee processing the fermentation stage is considered one of the critical operations by its impact on the final quality of the product. However, the level of control of the fermentation process on each farm is often not adequate; the use of sensorics for controlling coffee fermentation is not common. The objective of this work is to characterize the fermentation temperature in a fermentation tank by applying spatial interpolation and a new methodology of data analysis based on phase space diagrams of temperature data, collected by means of multi-distributed, low cost and autonomous wireless sensors. A real coffee fermentation was supervised in the Cauca region (Colombia) with a network of 24 semi-passive TurboTag RFID temperature loggers with vacuum plastic cover, submerged directly in the fermenting mass. Temporal evolution and spatial distribution of temperature is described in terms of the phase diagram areas which characterizes the cyclic behaviour of temperature and highlights the significant heterogeneity of thermal conditions at different locations in the tank where the average temperature of the fermentation was 21.2 °C, although there were temperature ranges of 4.6°C, and average spatial standard deviation of ±1.21ºC. In the upper part of the tank we found high heterogeneity of temperatures, the higher temperatures and therefore the higher fermentation rates. While at the bottom, it has been computed an area in the phase diagram practically half of the area occupied by the sensors of the upper tank, therefore this location showed higher temperature homogeneity

More information

Item ID: 30194
DC Identifier: http://oa.upm.es/30194/
OAI Identifier: oai:oa.upm.es:30194
Official URL: http://www2.scut.edu.cn/CIGR2013/index.html
Deposited by: Memoria Investigacion
Deposited on: 14 Jul 2014 14:16
Last Modified: 03 Nov 2016 16:26
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